помоги изменить предложение в:Pr.S,Pr.C,Future,Past.S Mr.Simson (to send) a letter to his friend.
Mr. Simson sent a letter to his friend (Past Simple)
Mr. Simson sends a letter to his friend (Present Simple)
Mr. Simson will send a letter to his friend (Future Simple)
Mr. Simson is sending a letter to his friend (Present Conti.)
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